Support `disable_presym` for `mrbgems/mruby-errno`

The `mrbgems/mruby-errno/src/known_errors_def.cstub` file has been extended, so the `mrbgems/mruby-errno/src/known_errors_e2c.cstub` file is no longer needed.

mrbgems/mruby-errno/src/errno.c

@@ -10,14 +10,30 @@
 #include <string.h>
 #include <mruby/presym.h>
 
-static struct {
+static const struct {
+#ifdef MRB_NO_PRESYM
+#define itsdefined(name, sym)   { #name, name },
+  const char *name;
+#else
+#define itsdefined(name, sym)   { sym, name },
   mrb_sym sym;
+#endif
   int eno;
 } e2c[] = {
-#include "known_errors_e2c.cstub"
-  {0, 0},
+#define itsnotdefined(name, sym)
+#include "known_errors_def.cstub"
+#undef itsdefined
+#undef itsnotdefined
 };
 
+#ifdef MRB_NO_PRESYM
+#define ENTRY_SYM(e)    mrb_intern_static(mrb, (e).name, strlen((e).name))
+#else
+#define ENTRY_SYM(e)    (e).sym
+#endif
+
+#define E2C_LEN         (sizeof(e2c) / sizeof(e2c[0]))
+
 static void
 mrb_sce_init(mrb_state *mrb, mrb_value self, mrb_value m, mrb_int n)
 {
@@ -30,14 +46,14 @@ mrb_sce_init(mrb_state *mrb, mrb_value self, mrb_value m, mrb_int n)
   if (!no_errno) {
     int i;
 
-    for (i=0; e2c[i].sym != 0; i++) {
+    for (i=0; i < E2C_LEN; i++) {
       if (e2c[i].eno == n) {
-        mrb_basic_ptr(self)->c = mrb_class_get_under_id(mrb, m_errno, e2c[i].sym);
+        mrb_basic_ptr(self)->c = mrb_class_get_under_id(mrb, m_errno, ENTRY_SYM(e2c[i]));
         str = mrb_str_new_cstr(mrb, strerror(n));
         break;
       }
     }
-    if (e2c[i].sym == 0) {
+    if (i == E2C_LEN) {
       mrb_iv_set(mrb, self, MRB_SYM(errno), mrb_fixnum_value(n));
       str = mrb_str_new_cstr(mrb, "Unknown error: ");
       snprintf(buf, sizeof(buf), "%d", (int)n);
@@ -158,19 +174,19 @@ mrb_mruby_errno_gem_init(mrb_state *mrb)
   //mrb_define_method(mrb, e, "===", mrb_exxx_cmp, MRB_ARGS_REQ(1));
   noerror = mrb_obj_value(e);
 
-#define itsdefined(SYM) \
+#define itsdefined(name, sym) \
   do {									\
     int ai = mrb_gc_arena_save(mrb);					\
-    e = mrb_define_class_under(mrb, eno, #SYM, sce);			\
-    mrb_define_const_id(mrb, e, MRB_SYM(Errno), mrb_fixnum_value(SYM)); \
+    e = mrb_define_class_under_id(mrb, eno, sym, sce);			\
+    mrb_define_const_id(mrb, e, MRB_SYM(Errno), mrb_fixnum_value(name)); \
     mrb_define_method(mrb, e, "initialize", mrb_exxx_init, MRB_ARGS_OPT(1)); \
     mrb_gc_arena_restore(mrb, ai);					\
-  } while (0)
+  } while (0);
 
-#define itsnotdefined(SYM) \
+#define itsnotdefined(name, sym) \
   do {									\
-    mrb_define_const(mrb, eno, #SYM, noerror);				\
-  } while (0)
+    mrb_define_const_id(mrb, eno, sym, noerror);			\
+  } while (0);
 
 #include "known_errors_def.cstub"
 }

mrbgems/mruby-errno/src/gen.rb

@@ -2,24 +2,17 @@
 
 Dir.chdir(File.dirname($0))
 
-e = File.open("known_errors_e2c.cstub", "w")
 d = File.open("known_errors_def.cstub", "w")
 
 IO.readlines("known_errors.def").each { |name|
   next if name =~ /^#/
   name.strip!
 
-  e.write <<CODE
-#ifdef #{name}
-  { MRB_SYM(#{name}), #{name} },
-#endif
-CODE
-
   d.write <<CODE
 #ifdef #{name}
-  itsdefined(#{name});
+  itsdefined(#{name}, MRB_SYM(#{name}))
 #else
-  itsnotdefined(#{name});
+  itsnotdefined(#{name}, MRB_SYM(#{name}))
 #endif
 CODE
 }

mrbgems/mruby-errno/src/known_errors_e2c.cstub

-#ifdef EPERM
-  { MRB_SYM(EPERM), EPERM },
-#endif
-#ifdef ENOENT
-  { MRB_SYM(ENOENT), ENOENT },
-#endif
-#ifdef ESRCH
-  { MRB_SYM(ESRCH), ESRCH },
-#endif
-#ifdef EINTR
-  { MRB_SYM(EINTR), EINTR },
-#endif
-#ifdef EIO
-  { MRB_SYM(EIO), EIO },
-#endif
-#ifdef ENXIO
-  { MRB_SYM(ENXIO), ENXIO },
-#endif
-#ifdef E2BIG
-  { MRB_SYM(E2BIG), E2BIG },
-#endif
-#ifdef ENOEXEC
-  { MRB_SYM(ENOEXEC), ENOEXEC },
-#endif
-#ifdef EBADF
-  { MRB_SYM(EBADF), EBADF },
-#endif
-#ifdef ECHILD
-  { MRB_SYM(ECHILD), ECHILD },
-#endif
-#ifdef EAGAIN
-  { MRB_SYM(EAGAIN), EAGAIN },
-#endif
-#ifdef ENOMEM
-  { MRB_SYM(ENOMEM), ENOMEM },
-#endif
-#ifdef EACCES
-  { MRB_SYM(EACCES), EACCES },
-#endif
-#ifdef EFAULT
-  { MRB_SYM(EFAULT), EFAULT },
-#endif
-#ifdef ENOTBLK
-  { MRB_SYM(ENOTBLK), ENOTBLK },
-#endif
-#ifdef EBUSY
-  { MRB_SYM(EBUSY), EBUSY },
-#endif
-#ifdef EEXIST
-  { MRB_SYM(EEXIST), EEXIST },
-#endif
-#ifdef EXDEV
-  { MRB_SYM(EXDEV), EXDEV },
-#endif
-#ifdef ENODEV
-  { MRB_SYM(ENODEV), ENODEV },
-#endif
-#ifdef ENOTDIR
-  { MRB_SYM(ENOTDIR), ENOTDIR },
-#endif
-#ifdef EISDIR
-  { MRB_SYM(EISDIR), EISDIR },
-#endif
-#ifdef EINVAL
-  { MRB_SYM(EINVAL), EINVAL },
-#endif
-#ifdef ENFILE
-  { MRB_SYM(ENFILE), ENFILE },
-#endif
-#ifdef EMFILE
-  { MRB_SYM(EMFILE), EMFILE },
-#endif
-#ifdef ENOTTY
-  { MRB_SYM(ENOTTY), ENOTTY },
-#endif
-#ifdef ETXTBSY
-  { MRB_SYM(ETXTBSY), ETXTBSY },
-#endif
-#ifdef EFBIG
-  { MRB_SYM(EFBIG), EFBIG },
-#endif
-#ifdef ENOSPC
-  { MRB_SYM(ENOSPC), ENOSPC },
-#endif
-#ifdef ESPIPE
-  { MRB_SYM(ESPIPE), ESPIPE },
-#endif
-#ifdef EROFS
-  { MRB_SYM(EROFS), EROFS },
-#endif
-#ifdef EMLINK
-  { MRB_SYM(EMLINK), EMLINK },
-#endif
-#ifdef EPIPE
-  { MRB_SYM(EPIPE), EPIPE },
-#endif
-#ifdef EDOM
-  { MRB_SYM(EDOM), EDOM },
-#endif
-#ifdef ERANGE
-  { MRB_SYM(ERANGE), ERANGE },
-#endif
-#ifdef EDEADLK
-  { MRB_SYM(EDEADLK), EDEADLK },
-#endif
-#ifdef ENAMETOOLONG
-  { MRB_SYM(ENAMETOOLONG), ENAMETOOLONG },
-#endif
-#ifdef ENOLCK
-  { MRB_SYM(ENOLCK), ENOLCK },
-#endif
-#ifdef ENOSYS
-  { MRB_SYM(ENOSYS), ENOSYS },
-#endif
-#ifdef ENOTEMPTY
-  { MRB_SYM(ENOTEMPTY), ENOTEMPTY },
-#endif
-#ifdef ELOOP
-  { MRB_SYM(ELOOP), ELOOP },
-#endif
-#ifdef EWOULDBLOCK
-  { MRB_SYM(EWOULDBLOCK), EWOULDBLOCK },
-#endif
-#ifdef ENOMSG
-  { MRB_SYM(ENOMSG), ENOMSG },
-#endif
-#ifdef EIDRM
-  { MRB_SYM(EIDRM), EIDRM },
-#endif
-#ifdef ECHRNG
-  { MRB_SYM(ECHRNG), ECHRNG },
-#endif
-#ifdef EL2NSYNC
-  { MRB_SYM(EL2NSYNC), EL2NSYNC },
-#endif
-#ifdef EL3HLT
-  { MRB_SYM(EL3HLT), EL3HLT },
-#endif
-#ifdef EL3RST
-  { MRB_SYM(EL3RST), EL3RST },
-#endif
-#ifdef ELNRNG
-  { MRB_SYM(ELNRNG), ELNRNG },
-#endif
-#ifdef EUNATCH
-  { MRB_SYM(EUNATCH), EUNATCH },
-#endif
-#ifdef ENOCSI
-  { MRB_SYM(ENOCSI), ENOCSI },
-#endif
-#ifdef EL2HLT
-  { MRB_SYM(EL2HLT), EL2HLT },
-#endif
-#ifdef EBADE
-  { MRB_SYM(EBADE), EBADE },
-#endif
-#ifdef EBADR
-  { MRB_SYM(EBADR), EBADR },
-#endif
-#ifdef EXFULL
-  { MRB_SYM(EXFULL), EXFULL },
-#endif
-#ifdef ENOANO
-  { MRB_SYM(ENOANO), ENOANO },
-#endif
-#ifdef EBADRQC
-  { MRB_SYM(EBADRQC), EBADRQC },
-#endif
-#ifdef EBADSLT
-  { MRB_SYM(EBADSLT), EBADSLT },
-#endif
-#ifdef EDEADLOCK
-  { MRB_SYM(EDEADLOCK), EDEADLOCK },
-#endif
-#ifdef EBFONT
-  { MRB_SYM(EBFONT), EBFONT },
-#endif
-#ifdef ENOSTR
-  { MRB_SYM(ENOSTR), ENOSTR },
-#endif
-#ifdef ENODATA
-  { MRB_SYM(ENODATA), ENODATA },
-#endif
-#ifdef ETIME
-  { MRB_SYM(ETIME), ETIME },
-#endif
-#ifdef ENOSR
-  { MRB_SYM(ENOSR), ENOSR },
-#endif
-#ifdef ENONET
-  { MRB_SYM(ENONET), ENONET },
-#endif
-#ifdef ENOPKG
-  { MRB_SYM(ENOPKG), ENOPKG },
-#endif
-#ifdef EREMOTE
-  { MRB_SYM(EREMOTE), EREMOTE },
-#endif
-#ifdef ENOLINK
-  { MRB_SYM(ENOLINK), ENOLINK },
-#endif
-#ifdef EADV
-  { MRB_SYM(EADV), EADV },
-#endif
-#ifdef ESRMNT
-  { MRB_SYM(ESRMNT), ESRMNT },
-#endif
-#ifdef ECOMM
-  { MRB_SYM(ECOMM), ECOMM },
-#endif
-#ifdef EPROTO
-  { MRB_SYM(EPROTO), EPROTO },
-#endif
-#ifdef ENOTCAPABLE
-  { MRB_SYM(ENOTCAPABLE), ENOTCAPABLE },
-#endif
-#ifdef ECAPMODE
-  { MRB_SYM(ECAPMODE), ECAPMODE },
-#endif
-#ifdef EMULTIHOP
-  { MRB_SYM(EMULTIHOP), EMULTIHOP },
-#endif
-#ifdef EDOTDOT
-  { MRB_SYM(EDOTDOT), EDOTDOT },
-#endif
-#ifdef EBADMSG
-  { MRB_SYM(EBADMSG), EBADMSG },
-#endif
-#ifdef EPWROFF
-  { MRB_SYM(EPWROFF), EPWROFF },
-#endif
-#ifdef EDEVERR
-  { MRB_SYM(EDEVERR), EDEVERR },
-#endif
-#ifdef EOVERFLOW
-  { MRB_SYM(EOVERFLOW), EOVERFLOW },
-#endif
-#ifdef EBADEXEC
-  { MRB_SYM(EBADEXEC), EBADEXEC },
-#endif
-#ifdef EBADARCH
-  { MRB_SYM(EBADARCH), EBADARCH },
-#endif
-#ifdef EBADMACHO
-  { MRB_SYM(EBADMACHO), EBADMACHO },
-#endif
-#ifdef ESHLIBVERS
-  { MRB_SYM(ESHLIBVERS), ESHLIBVERS },
-#endif
-#ifdef ENOTUNIQ
-  { MRB_SYM(ENOTUNIQ), ENOTUNIQ },
-#endif
-#ifdef EBADFD
-  { MRB_SYM(EBADFD), EBADFD },
-#endif
-#ifdef EREMCHG
-  { MRB_SYM(EREMCHG), EREMCHG },
-#endif
-#ifdef ELIBACC
-  { MRB_SYM(ELIBACC), ELIBACC },
-#endif
-#ifdef ELIBBAD
-  { MRB_SYM(ELIBBAD), ELIBBAD },
-#endif
-#ifdef ELIBSCN
-  { MRB_SYM(ELIBSCN), ELIBSCN },
-#endif
-#ifdef ELIBMAX
-  { MRB_SYM(ELIBMAX), ELIBMAX },
-#endif
-#ifdef ELIBEXEC
-  { MRB_SYM(ELIBEXEC), ELIBEXEC },
-#endif
-#ifdef EILSEQ
-  { MRB_SYM(EILSEQ), EILSEQ },
-#endif
-#ifdef ERESTART
-  { MRB_SYM(ERESTART), ERESTART },
-#endif
-#ifdef ESTRPIPE
-  { MRB_SYM(ESTRPIPE), ESTRPIPE },
-#endif
-#ifdef EUSERS
-  { MRB_SYM(EUSERS), EUSERS },
-#endif
-#ifdef ENOTSOCK
-  { MRB_SYM(ENOTSOCK), ENOTSOCK },
-#endif
-#ifdef EDESTADDRREQ
-  { MRB_SYM(EDESTADDRREQ), EDESTADDRREQ },
-#endif
-#ifdef EMSGSIZE
-  { MRB_SYM(EMSGSIZE), EMSGSIZE },
-#endif
-#ifdef EPROTOTYPE
-  { MRB_SYM(EPROTOTYPE), EPROTOTYPE },
-#endif
-#ifdef ENOPROTOOPT
-  { MRB_SYM(ENOPROTOOPT), ENOPROTOOPT },
-#endif
-#ifdef EPROTONOSUPPORT
-  { MRB_SYM(EPROTONOSUPPORT), EPROTONOSUPPORT },
-#endif
-#ifdef ESOCKTNOSUPPORT
-  { MRB_SYM(ESOCKTNOSUPPORT), ESOCKTNOSUPPORT },
-#endif
-#ifdef EOPNOTSUPP
-  { MRB_SYM(EOPNOTSUPP), EOPNOTSUPP },
-#endif
-#ifdef EPFNOSUPPORT
-  { MRB_SYM(EPFNOSUPPORT), EPFNOSUPPORT },
-#endif
-#ifdef EAFNOSUPPORT
-  { MRB_SYM(EAFNOSUPPORT), EAFNOSUPPORT },
-#endif
-#ifdef EADDRINUSE
-  { MRB_SYM(EADDRINUSE), EADDRINUSE },
-#endif
-#ifdef EADDRNOTAVAIL
-  { MRB_SYM(EADDRNOTAVAIL), EADDRNOTAVAIL },
-#endif
-#ifdef ENETDOWN
-  { MRB_SYM(ENETDOWN), ENETDOWN },
-#endif
-#ifdef ENETUNREACH
-  { MRB_SYM(ENETUNREACH), ENETUNREACH },
-#endif
-#ifdef ENETRESET
-  { MRB_SYM(ENETRESET), ENETRESET },
-#endif
-#ifdef ECONNABORTED
-  { MRB_SYM(ECONNABORTED), ECONNABORTED },
-#endif
-#ifdef ECONNRESET
-  { MRB_SYM(ECONNRESET), ECONNRESET },
-#endif
-#ifdef ENOBUFS
-  { MRB_SYM(ENOBUFS), ENOBUFS },
-#endif
-#ifdef EISCONN
-  { MRB_SYM(EISCONN), EISCONN },
-#endif
-#ifdef ENOTCONN
-  { MRB_SYM(ENOTCONN), ENOTCONN },
-#endif
-#ifdef ESHUTDOWN
-  { MRB_SYM(ESHUTDOWN), ESHUTDOWN },
-#endif
-#ifdef ETOOMANYREFS
-  { MRB_SYM(ETOOMANYREFS), ETOOMANYREFS },
-#endif
-#ifdef ETIMEDOUT
-  { MRB_SYM(ETIMEDOUT), ETIMEDOUT },
-#endif
-#ifdef ECONNREFUSED
-  { MRB_SYM(ECONNREFUSED), ECONNREFUSED },
-#endif
-#ifdef EHOSTDOWN
-  { MRB_SYM(EHOSTDOWN), EHOSTDOWN },
-#endif
-#ifdef EHOSTUNREACH
-  { MRB_SYM(EHOSTUNREACH), EHOSTUNREACH },
-#endif
-#ifdef EALREADY
-  { MRB_SYM(EALREADY), EALREADY },
-#endif
-#ifdef EINPROGRESS
-  { MRB_SYM(EINPROGRESS), EINPROGRESS },
-#endif
-#ifdef ESTALE
-  { MRB_SYM(ESTALE), ESTALE },
-#endif
-#ifdef EUCLEAN
-  { MRB_SYM(EUCLEAN), EUCLEAN },
-#endif
-#ifdef ENOTNAM
-  { MRB_SYM(ENOTNAM), ENOTNAM },
-#endif
-#ifdef ENAVAIL
-  { MRB_SYM(ENAVAIL), ENAVAIL },
-#endif
-#ifdef EISNAM
-  { MRB_SYM(EISNAM), EISNAM },
-#endif
-#ifdef EREMOTEIO
-  { MRB_SYM(EREMOTEIO), EREMOTEIO },
-#endif
-#ifdef EDQUOT
-  { MRB_SYM(EDQUOT), EDQUOT },
-#endif
-#ifdef ECANCELED
-  { MRB_SYM(ECANCELED), ECANCELED },
-#endif
-#ifdef EKEYEXPIRED
-  { MRB_SYM(EKEYEXPIRED), EKEYEXPIRED },
-#endif
-#ifdef EKEYREJECTED
-  { MRB_SYM(EKEYREJECTED), EKEYREJECTED },
-#endif
-#ifdef EKEYREVOKED
-  { MRB_SYM(EKEYREVOKED), EKEYREVOKED },
-#endif
-#ifdef EMEDIUMTYPE
-  { MRB_SYM(EMEDIUMTYPE), EMEDIUMTYPE },
-#endif
-#ifdef ENOKEY
-  { MRB_SYM(ENOKEY), ENOKEY },
-#endif
-#ifdef ENOMEDIUM
-  { MRB_SYM(ENOMEDIUM), ENOMEDIUM },
-#endif
-#ifdef ENOTRECOVERABLE
-  { MRB_SYM(ENOTRECOVERABLE), ENOTRECOVERABLE },
-#endif
-#ifdef EOWNERDEAD
-  { MRB_SYM(EOWNERDEAD), EOWNERDEAD },
-#endif
-#ifdef EINTEGRITY
-  { MRB_SYM(EINTEGRITY), EINTEGRITY },
-#endif
-#ifdef ERFKILL
-  { MRB_SYM(ERFKILL), ERFKILL },
-#endif
-#ifdef EAUTH
-  { MRB_SYM(EAUTH), EAUTH },
-#endif
-#ifdef EBADRPC
-  { MRB_SYM(EBADRPC), EBADRPC },
-#endif
-#ifdef EDOOFUS
-  { MRB_SYM(EDOOFUS), EDOOFUS },
-#endif
-#ifdef EFTYPE
-  { MRB_SYM(EFTYPE), EFTYPE },
-#endif
-#ifdef ENEEDAUTH
-  { MRB_SYM(ENEEDAUTH), ENEEDAUTH },
-#endif
-#ifdef ENOATTR
-  { MRB_SYM(ENOATTR), ENOATTR },
-#endif
-#ifdef ENOTSUP
-  { MRB_SYM(ENOTSUP), ENOTSUP },
-#endif
-#ifdef EPROCLIM
-  { MRB_SYM(EPROCLIM), EPROCLIM },
-#endif
-#ifdef EPROCUNAVAIL
-  { MRB_SYM(EPROCUNAVAIL), EPROCUNAVAIL },
-#endif
-#ifdef EPROGMISMATCH
-  { MRB_SYM(EPROGMISMATCH), EPROGMISMATCH },
-#endif
-#ifdef EPROGUNAVAIL
-  { MRB_SYM(EPROGUNAVAIL), EPROGUNAVAIL },
-#endif
-#ifdef ERPCMISMATCH
-  { MRB_SYM(ERPCMISMATCH), ERPCMISMATCH },
-#endif
-#ifdef EIPSEC
-  { MRB_SYM(EIPSEC), EIPSEC },
-#endif
-#ifdef ENOPOLICY
-  { MRB_SYM(ENOPOLICY), ENOPOLICY },
-#endif
-#ifdef EQFULL
-  { MRB_SYM(EQFULL), EQFULL },
-#endif